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Track Header's duration value versus Media Handler Header's duration value

Subject: Track Header's duration value versus Media Handler Header's duration value
From: Graham Anderson <email@hidden>
Date: Thu, 27 Oct 2005 11:53:43 -0700
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How does the Media Handler's duration value correlate to the Track Header's duration value ? Is it related in some way ?


Track Header [tkhd]
    duration= 18579

Edits [edts]
    Edit List [elst]
         trackdur = 18579   //same value which makes sense

Media[mdia]
    Media Handler Header[mdhd]
        duration = 92900    // huh ?
        timescale = 2997


many thanks
g

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